The Influence of Brand Image, Brand Ambassador, Word Of Mouth and Testimony in Social Media on Purchase Decisions of Sulthanah Hijab in Tegal City Journal title: Dialektika : Jurnal Ekonomi dan Ilmu Sosial Authors: Agnes Dwita Susilawati, Ahmad Hanfan, Fetalia Haryanti Anugrah Subject(s): Economics, Human Resource Management, Management and Marketing, Business, Finance